#include <iostream>
#include <cmath>

using namespace std;

float
cont_cond_prob (float val, float mean, float variance2)
{
  float sqrt_2pi = 2.5066283;
  float variance = sqrt (variance2);
  float exp_val = -((val - mean) * (val - mean)) / (2 * variance2);
  return (1 / (sqrt_2pi * variance)) * exp (exp_val);
}


int main()
{
cout<<cont_cond_prob(123,34.098,38904.7854);

}
